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%I M2669 N1068 #17 Feb 04 2022 00:39:48
%S 3,7,19,25,51,109,153,213,289,1121,1121,1121,3997,7457,12017,12719,
%T 20299,24503,24503,25817,25817,128755,128755,219207,456929,456929,
%U 761619,883537
%N Class numbers of quadratic fields.
%D D. H. Lehmer, E. Lehmer and D. Shanks, Integer sequences having prescribed quadratic character, Math. Comp., 24 (1970), 433-451.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H D. H. Lehmer, E. Lehmer and D. Shanks, <a href="/A002189/a002189.pdf">Integer sequences having prescribed quadratic character</a>, Math. Comp., 24 (1970), 433-451 [Annotated scanned copy]
%H <a href="/index/Qua#quadfield">Index entries for sequences related to quadratic fields</a>
%K nonn,more
%O 3,1
%A _N. J. A. Sloane_
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